The zeros of the cubic polynomial $p(x) = ax^3 + bx^2 + cx + d$ where $a \neq 0$ and $a, b, c, d \in R$ are $\alpha, \beta,$ and $\gamma$. Then $\alpha \beta \gamma = \dots$

  • A
    $\frac{d}{a}$
  • B
    $-\frac{d}{a}$
  • C
    $\frac{b}{a}$
  • D
    $\frac{c}{a}$

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